JPH03295996A - Light intercepting roll blind - Google Patents

Abstract

PURPOSE:To perfectly intercept light by closing up a blind by positioning the back of a weight bar and a screen on the same face, making a back guide of a plated hair material, and idly movably providing a bar support in a side frame. CONSTITUTION:A screen 40 is wound on a winding pipe 41 which is borne by a top frame 11, and the front face of the screen 40 is reversibly or detachably provided with a top cover 12, and its back is provided with a back guide 14 made of a plated hair material, A bottom frame 30 is spanned the ends of right and left side frames 20 extending from both sides of the top frame 11, and a weight bar 50 is attached to the tip of the screen 40. Right and left edges of the screen 40 are provided with a cylindrical member 45 respectively, and the end 53 of the weight bar 50 is provided with a cylindrical member 55, and a bar support 24 is arranged within the side frame 20 with an inner bar 25 inserted through the bar support 24. The front face of the side frame 20 is detachably provided with a side cover 22.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to an improvement in a roller blind that can completely block light when closed.

[Prior Art] A light-shielding roll blind consists of a top frame that bears a roll wrapped with a screen, a side frame whose upper end is in close contact with both sides of the top frame, a bottom frame attached to the lower end of the side frame, and a screen. Consisting of a weight bar attached to the tip, the left and right edges of the screen go deep inside the side frame, and when closed, the weight bar overlaps the bottom rail, completely preventing light from leaking from around the screen.

As disclosed in Japanese Patent Application Laid-open No. 63-51590, the weight bar of conventional light-shielding roll blinds has a structure in which the tip of the screen is introduced and locked through a slit in the center of the top surface of the weight bar, and the cross-sectional shape of the weight bar is It was symmetrical with respect to the screen plane. Light leaks when the left and right edges of the screen protrude from the side frame, but in order to prevent this, the left and right edges of the screen are formed into a loop, and the loop is passed through an inner bar whose lower end is fixed to the side frame. is JP-A-58-120985
Disclosed in the issue.

The winding diameter of the screen decreases as it is unwound, so the unwinding position of the screen moves forward as it is unwound, but the entrance at the top of the side frame remains constant, so a rear guide is required to guide the screen to the bottom of the top frame. However, conventional rear guides have been either hard or soft members. In addition, conventional side frames are hollow prismatic shapes with thin slits running through them, and cannot be fixed to the wall from the inside. A bracket was fixed to the frame, and a side frame was attached to the bracket.

[Subject S to be solved by the invention] In order to maintain and inspect the roll blind and replace the screen, the winding pipe and screen must be removed from the top frame along with the weight bar.For this purpose, the front of the top rail is Although it is reversible or removable,
As shown by the chain line in FIG. 8, if the cross-sectional shape of the weight bar 70 is symmetrical with respect to the screen, even if the left and right edges of the screen 40 are pulled out from the upper end of the side frame 20, the rear half of the weight bar 70 will be at the top. frame 1
It hit the bottom surface of 1 and could not be pulled out. In other words, unless the side frame 20 is removed, the winding pipe 4
1 could not be removed from the top frame 11.

A first object of the present invention is to solve this problem by providing a light-shielding roll blind in which the winding pipe and weight bar can be removed from the top frame without removing the side frame.

The hard rear guide allows the screen to slide smoothly, but
When the screen slides, it makes an unpleasant noise, and although the soft back guide is quiet, it has poor sliding and tends to cause trouble in winding up the screen. The goal is to provide a good guide to solve this problem.

When the left and right edges of the screen are made into cylindrical parts and passed through the inner bar, the lower end of the conventional inner bar is fixed, so if the fixing position is not accurate, the screen will rub and the movement will be uneven. The third aspect of the present invention was
The purpose is to solve this problem by providing a light-shielding roller blind in which the movement of the screen is not affected by the accuracy of the inner bar fixing position.

Fixing the side frame to the wall from the outside with screws is undesirable because the screws will be visible from the outside.If the side frame is fixed to the wall via brackets, light will easily leak from between the bracket and the side frame and the appearance will be poor. A fourth object of the present invention is to solve this problem by providing a side frame that can be screwed from the inside without using brackets.

[Means for Solving the Problems] In order to achieve the first object, the means adopted by the present invention consists in making the back surface of the weight par at the tip of the screen substantially flush with the back surface of the screen. The means to achieve this is to make the rear guide a flocked body, and the means to achieve the third purpose is to fix the lower end of the inner bar to a hollow bar support with a slit on the inner surface, and The means for achieving the fourth purpose is that the bar support is freely movable within the side frame.
The side frame is formed so that it can be screwed onto a wall surface etc. from the inside, and the front side cover is made removable.

[Function] The back of the weight par is almost concave with the back of the screen, so even if you pull the weight par upward from the side frame, the part of the weight par behind the back of the screen will not hit the bottom surface of the top frame or the back guide. There is no,
Therefore, if you flip or remove the top cover of the top frame and take out the take-up pipe, then push the weight/height up from the side frame, the weight/head will come off the side frame along with the screen, so the side The screen and weight bar can be removed along with the take-up pipe without removing the frame.

The back guide is a flocked body, so even if it rubs against the screen, the sliding resistance is low and no unpleasant noise is generated.The inner bar is fixed and the support is free to move, so it has nothing to do with assembly accuracy. The inner bar automatically comes to the position that matches the cylindrical bodies on the left and right edges of the screen.
Screen movement is always smooth. The screws that secure the side frame are not exposed to the outside, and there are no brackets, so the exterior looks clean and good, and screw tightening becomes extremely easy once the side cover is removed.

[Example] A roll blind of the present invention will be described based on an example shown in the drawings.

As shown in FIGS. 1 and 2, the light-shielding roll blind IO includes a top frame 11, left and right side frames 20 hanging from both ends of the top frame 11, and a lower end of the left and right side frames. It consists of a bottom frame 30, a screen 40 drawn out from the top frame 11, and a weight par 50 attached to the tip of the screen.

A top cover 12 is detachably attached to the front surface of the top frame 11, and a side cover 22 is detachably attached to the front surface of the side frame 20. A back guide 14 is attached to the lower end of the top frame 11. bottom frame 30
A catch plate 31 is attached to hang and stop the weight par 50. A pull cord 51 and a pull pole 52 for operation hang down from the weight par 50.

The winding pipe 41 on which the screen 40 is wound is supported by bearings 42 at both ends, and the bearings are connected to the top frame 1.
1 is removably attached. A cylindrical portion 45 is formed at the left and right edges of the screen 40, and the cylindrical portion fits into the inner bar 25 that stands upright within the bar support 24. The bar support 24 to which the inner bar 25 is fixed is arranged in a space surrounded by the side frame 20 and the side cover 21 so as to be freely movable back and forth and left and right.

As shown in FIGS. 3 and 4, the winding pipe 41 is rotatably fitted into one fixed shaft end 43, and the other rotating shaft end 44 is integral with the winding pipe 41. A take-up spring 4B is attached between the fixed end portion 43 and the take-up pipe 41, and the take-up spring 46 rotates the take-up pipe 41 in the screen winding direction. Thin side tapes that are folded back and doubled are sewn to the left and right edges of the screen 40, and the side tapes form a cylindrical portion 45 of the screen. The leading end of the screen 40 is separated into right and left edges and a central portion between them, and the central portion is wrapped around a locking bar 47. weight par 50
Both ends 53 are flat and extend along the back surface, and the tip is formed into a cylindrical body 55. The screen cylindrical part 45 is fitted onto the upper half of the cylindrical body 55, and both are fixed with adhesive tape 54 from above. The weight par 50 is made up of a front plate 58 and a back plate 57, and a locking bar groove 58 into which a locking bar 47 is fitted is provided in the upper part of the front plate 56. A shelf 59 is integrally provided on the rear surface of the front plate 5B, a bearing 60 is screwed to the shelf, and a lock set 81 is pivotally supported by the bearing. The lower end of the lock set 81 is a catch plate 3 of the bottom frame 30 shown in FIGS. 1 and 2.
1 can be stopped.

The screen 40 is connected to the upper rear surface of the front plate 56 and the thin rear plate 5.
Since the weight bar 50 enters the locking bar groove 5B from between the upper front surfaces of the weight bars 7 and 7, the back surface of the weight bar 50 is located on a substantially concave-perpendicular surface with the back surface of the screen 40.

As shown in FIG. 5, the inner bar 25 is located approximately at the center within the bar support 24, and a slit 23 is provided on the inner surface of the bar support 24. The side frame 20 and the side cover 22 are removably connected via a holder 21, and the side cover 22 is attached to the rib 26 of the side frame 20.
Positioned by A slit 2 for the bar support 24 is provided on the inner surface of the side frame 20 and the side cover 22.
A void 27 corresponding to No. 3 is formed. side frame 2
0 and the inner surface of the side cover 22 are provided with protrusions 28, 28 which limit the range of movement of the bar support 24. The end portion 53 of the weight par 50 enters into the side frame 20 through the gap 27 and further into the bar support 24 through the slit 23, and the cylindrical body 55 at the tip fits onto the inner par 25.

The side frame 20 is screwed to the wall from the inside. At this time, if the side cover 22 is removed, screwing can be done very easily. Since the screws are not exposed to the outside, the appearance of the Roll Bride will not be affected by the screws, and the accuracy of the mounting position of the left and right side frames 20 with respect to the top frame 11, and the left and right edges of the screen 40 wound around the winding pipe. Depending on the position of the parts, the left and right cylinders 55 of the weight par 50 and the cylinder part 45 of the screen 40
However, since the bar support 24 that holds the inner par 25 that passes through the cylindrical body 55 and the cylindrical part 45 is movable back and forth and left and right within the side frame 20, the inner par 25 and the bar support 24 are automatically moved. cylindrical part 4
5 and the cylindrical body 55. Therefore, the screen 40 and the weight par 50 move smoothly along the side frame 20.

As shown in FIG. 6, the lower end of the inner par 25 is fixed to the lower end of the bar support 24 via the fixing plate 15.

As shown in FIG. 7, the back side of the screen 40 pulled out from the winding pipe 41 is always connected to the back side guide 1 of the flocked body 14.
4 and hangs down. Weight par 5 at the tip of the screen
Since the back surface of 0 substantially coincides with the hanging surface of the screen, even if the weight par 50 rises, it will not come into contact with the back surface guide 14 or the bottom surface of the top frame 11. The screen 40 always moves along the rear guide 14, but since the sliding resistance of the flocked body is small, there is no problem with the movement of the screen 40, and even if the flocked body rubs against the screen 40, it does not make unpleasant noises. It will never occur.

When performing maintenance and inspection on the roll blind or replacing the screen 40, the weight par 50 and the winding pipe 41 must be removed together with the screen 40 from the top frame 11. In this case, the top cover 12 must be removed and the winding pipe 41 must be removed from the top frame 11. When the weight par 50 is pushed up while taking it out forward, as the weight par 50 moves up into the top frame 11, the cylindrical part and the cylindrical body come out of the inner par 25, as shown in FIG. 41 can be easily removed together with the screen 40. At this time, the bearings at both ends also come off. screen 4
When installing the winding pipe 41 wound with 0, the reverse is true. When the cylindrical body of the weight par 50 is placed on the upper end of the inner par 25 and the weight par 50 is pushed down, the cylindrical part of the screen 40 is attached to the inner par Fits in 25. Then,
When the winding pipe 41 is pushed in so that the bearings at both ends fit into the top frame 11, the winding pipe 4] is set at a predetermined position inside the top frame 11.

After that, the top cover 12 is attached to the top frame 11.

[Effects of the Invention] As described above, in the light-shielding roll blind of the present invention, since the conventional weight par has a part that protrudes rearward from the back of the screen, the weight par cannot be removed without removing the side frame. Unlike the conventional weight bar, the weight bar does not have a protruding part on the back side of the screen, so it has the special effect of being able to remove the weight bar without removing the side frame.

In addition, in the roll blind of the present invention, a cylindrical part is provided on both side edges of the screen, and an inner bar in the side frame is inserted into the cylindrical part to guide the screen. Unlike the screen that was fixed to the frame and could easily move unsmoothly due to assembly precision, the bar support with the lower end of the inner bar fixed is placed freely within the side frame, which improves assembly precision. The excellent effect is that the screen moves smoothly regardless of the time.

In the roll blind of the present invention, the rear guide that determines the hanging surface of the screen is a flocked body, so unlike conventional guides, it does not generate unpleasant noise even if it rubs against the screen, and the sliding resistance is small, allowing the screen to move. It rarely causes any problems.

Since the side frame of the roll blind of the present invention is screwed to the wall from the inside, compared to conventional methods that are screwed from the outside or installed via brackets, the screws are not exposed and there are no brackets. It has a good appearance, and since the front side cover is removable, it is extremely easy to screw it in place.

[Brief explanation of drawings]

Figures 1 and 2 are perspective views of one embodiment of the roll blind of the present invention, Figure 3 is a front view of the main parts of the roll blind in Figure 1, and Figure 4 is shown along the mV-mV line in Figure 3. Figure 5 is a plan view of the side frame, Figure 6 is a partially cutaway front view of the bar support, Figure 7 is a cross-sectional view of the top frame, and Figure 8 is a schematic diagram showing the removal of the Roll Bride. . In the figure, 10 is a roll blind, 11 is a top frame, 12 is a top cover, 14 is a rear guide,
20 is a side frame, 22 is a side cover 23 is a slit, 24 is a bar support, 25 is an inner bar, 30
is a bottom frame, 40 is a screen, 41 is a winding pipe, 45 is a cylindrical part, 50 is a weight bar 53 is an end,
Reference numeral 55 indicates a cylindrical body.

Claims (1)

[Claims] 1) A winding pipe (41) around which a screen (40) is wound.
), and a top frame (
11), a top cover (12) attached to the front surface of the top frame in a reversible or removable manner, a back guide (14) attached to the top frame to rear the back side of the screen, and a top rail (11); Left and right side frames (20) extending from both sides, and a bottom frame (3) passing over the extended ends of the left and right side frames.
0) and a weight bar (50) attached to the tip of the screen, the roll blind (10) is provided such that the left and right edges of the screen pass inside the side rail. ) is a light-shielding roll blind characterized in that its back surface is formed to be substantially flush with the back surface of the screen. 2) The light-shielding roller blind according to claim 1, wherein the back guide (14) is a flocked body. 3) A cylindrical part (45) is provided on the left and right edges of the screen, and a cylindrical body (55) connected to the cylindrical part is attached to a weight bar (
provided at the end (53) of the side frame (2
0) with a slit (23) inside the bar support (
24) is freely movably arranged, an inner bar (25) whose lower end is fixed to the bar support is inserted, and the cylinder body (45) and the cylindrical part (45) are fitted into the inner bar. The light-shielding roller blind according to claim 1 or 2, characterized in that: 4) The side frame (20) can be screwed onto a wall from the inside, and a side cover (22) is removably provided on the front surface of the side frame. Blackout roller blinds as described in .